Heating-drum



(No Model.)

R. F. SAXTON.

HEATING DRUM.

No. 550,504. Patented D55. s, 1895.

[zu/enna f PHOYO'LITHO WASMINGTUN UNITE STATES PATENT NEIGE..

ROMAINE E. SAXTON, OE MINNEAPOLIS, MINNESOTA.

HEATINSGLDRUM.

SPECIFICATION forming part of Letters Patent No. 550,804, dated December, 1895.

Application ined February 26, 1895. sentano. 539,723. (Nnlmodei.)

Toall whom t may concern:

Be it known that l, ROMAINE F. SAXTON, a citizen of the United States, residing at Min neapolis7 in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Heating-Drums; and I do hereby declare the following to be a full, clear, andeXact description of the invention, such as will enable othersV skilled in the art to which it appertains to make and use the same.

My invention has for its obj ect to provide an improved heatingdrum especially designed for use with furnaces, but also capable of use with other forms of heaters.

To this end my invention consists of the novel features of construction hereinafter described, and dened in the claim.

The accompanying drawings illustrate my invention, wherein,` like letters referring to like parts throughout the several views Figure l is a side elevation of the drum with some parts broken away. Fig. 2 is a vertical central section of the same on the line a; of Fig. 3 with some parts broken away. Fig. 3 is a horizontal section on the, line of Fig. 2, and Fig. 4 is a horizontal section on the line 002 m2 of Fig. 2.

a a represent, respectively, the sheeting and annular joint-ribs, constituting together the outside casing or shell of the drum. rlhe said casing is provided with a fresh-air-inlet supply pipe or opening a? at its lower end and with aV hot-air-discharge pipe as at its upper end. The hot-air-discharge pipe would be provided with the necessary branch pipes (not shown) for distributingv the heated air to the rooms to be heated or other points desired.

The lower end of the casing ce a is shown as open and is adapted to rest on the floor b or any other suitable support.

The lowermember of the joint-ribs c is provided with inwardly-proj ecting radial lugs a4, on which rests a closed drum-head c of `smaller diameter than the outside shell a a. To the upper plate of the drum-head c are iXed openended tubes c. To the upper ends of the tubes c is secured the lower plate of a closed drum-head c2 Open-ended tubes d of smaller diameter than the tubes c extend through the said tubes c and the body portions of the drum-heads c and c2 and have their lower and upper ends secured to the lower and upper plates, respectively, of the said drum-heads c and c2 and opening from the same into the circulating chambers below and above the drum-heads. For convenience the chamber d belowthe lower drum-head c may be called the fresh-air chamber, as it 'communicates directly with the fresh-air-supply pipe d2. The chamber di above the upper drum-head c2 may be called the hot-air, chamber, and the circulating space or chamber d2 between the two drum-heads c c2 may be called the intermediate airchamber. 1 The outletflue or discharge-pipe-cf110m the furnace or other heater passes through t `e`--casing a c and' enters the upper drum-head c2, and at a point directly opposite the furnacepipe cS the said drum-head c2 is provided with an outlet or discharge iiue c4, leading to the chimney. (Notshown.) The outlet-flue 'c4 is shown as provided with a damper c5 and a check-draft c6 of the ordinary construction.

The drum-head c2 is divided into two compartments by a vertical crosslpartition c7, which is provided with a sliding damper cs, as shown in Figs. 2 and 3. The lower drum head c is shown as provided with a clean-out thimble and plug cf.

Having regard to the action of the parts,

supposing the damper e8 in the upper drum head c2 to be closed or as shown in Fig. 3 the heater would be operated with the indirect draft, and if the said damper cE be thrown peii the heater will be operated with a direct ra t.

If set for indirect draft, the products of combustion from the furnace as supplied through the furnace flue-pipe c8 will enter the adjacent compartment of the upper drum-head c2 and will pass down through the flue-tubes c" in that compartment to the lower drum-head c and through the same into the other flue-tubes c', which terminate above in the other compartment of the upper drum-head c2, and thence into the outlet or chimney flue c4. Otherwise stated, the products of combustion from the furnace willpass from one compartment of the upper drum-head c2 through the downtake members of the iiue-tubes c into the lower drum-head c, and from the said drum-head c the said products of combustion will pass through the uptake members of said Iluetubes c into the other compartment of the upper drum-head and out through the chimneyue c4. The fresh air supplied to the chamber d from the intake or supply-pipe a2 Will be divided up into a series of columns, which Will pass upward through the air-tubes d and the intermediate chamber or spaces cl2 outside of the flue-tubes c.' and the drum-heads c c2 into the upper or hot-air chamber cl3, and thence into the distributing pipe or hood a3. In this progress of the fresh air from the chamber d to the chamber d3 it will be brought into contact With or get the benefit of the radiation from the drum-heads c c and the flue-tubes c and be thereby thoroughly heated. It is obvious that this arrangement for circulating the products of combustion and the air to be heated renders available a large amount of radiatingsurface in comparatively small compass and that the air to be heated must circulate about the said radiating-surfaces in a Way to receive the full effects of the heat.

When the partition-damper o8 is in its open position, it is, of course, obvious that the products of combustion will pass from the pipe c3 directly through the upper drum-head c2 into the outlet or chimney lue pipe c4.

Vhat I claim, and desire to secure by Letters Patent of the United States7 is as follows:

The combination with the casing having the air intake a2 and air discharge pipe a3, of the drum-heads c c2 of less diameter than the easing and connected by the iiue tubes c', the

. stantially as descrbed.

In testimony whereof I aflix my signature in presence of tWo Witnesses.

ROMAINE F. SAXTON. lVitnesses:

J As. F. WILLIAMsoN, FRANK. D. MERCHANT. 

